Paper feed for winding machines



May 1, 1928. 1,668,114

E. J. HENNELLY PAPER FEED FOR WINDING MACHINES Filed May 10, 1927 2Sheets-Sheet 1 May 1, 1928. 1,668,114

E. J. HENNELLY PAPER FEED FOR WINDING MACHINES Filed May 10. 1927 2Sheets-Sheet 2 Patented May 1, 1928.

UNITED STVQA'TES PATENT OFFICE.

EDWARD J. HENNELLY, F JERSEY CI'IYINEW JERSEY, ASSIGNOR TO IRVINGTONVARNISH 8a INSULATOR 60., A CORPORATION OF NEW JERSEY.

PAPER FEED FOR WINDING MACHINES.

Application filed May 10, 1927. Serial No. 190,130.

This invention relates to machines for winding strands of material, suchas wire, thread, ribbon or filaments into coils, helices or bobbins andhas particular reference to .5 machines for windingcopper wire intocoils or helices for use in various kinds of electrical apparatus. Theparticular embodiment of the invention herein described is in the natureof an improvement on the type of 10 machine disclosed, for example in U.S. Patent #1,368,536 granted February 15, 1921, to James C. Anderson andin U. S. Patent #1,521,372 granted December 30, 1924, to Bernard F.Johnson. In this type 1 of machine'aplurality of coils are woundsimultaneously in separated zones upon a spindle or mandrel, theconvolutions of wire being wound in layers superposed one upon theother. The machine has provision for introducing or injecting sheets ofsuitable material, such as paper, between the adjacent wire layersduring the building up of the coils and while the spindle is in motion.In machines of this type, the wires to each of the separate coils areguided thereto b means of a-reciprocating traverse bar which carries aplurality of spaced guides over which the wires pass before being woundupon the Winding spindle. Driving means are provided for reciprocatingthe traverse bar and changes its direction of travel to guide the wireto lay successive layers upon the winding spindle. r During the timeinterval occurring while the traverse bar is reversing its direction atthe end of each stroke a sheet or sheets of insulating material, usuallypaper, are inserted and wrapped around the last layer of a coil to forma new foundation for the sucproper insertion varies with the diameter ofthe wires which are being wound as does the angle of the wire relativelyto the axis of the coil at which the wire will reverse its shaft througha reversing clutch mechanism.

This reversing clutch mechanism is controlled and reversed by amechanism oper ated from the driving shaft and controlled by thetraverse bar.

It has been customary to control the feed-- ing means'for inserting thesheets of insulat ing material from the same screw shaft which actuatesthe traverse bar in such a manner that the feeding of the sheets ofpaper occurs the first partial revolution after the .shaft has beenreversed. It has been found, however, that the critical moment at whichthe insulating material should be inserted could not be accuratelycontrolled in this manner due to the lapse of time that is consumed bythe operation of the revers ing mechanism and, therefore, the insulatingmaterial could not always be inserted at the critical moment to preventa cross-over of the wire before or after a sheet was inserted.

It is the purpose of this invention to pro vide amechanism to insert theinsulating material at the critical moment and which may be adjustedwhereby cross-overs may be prevented regardless of the diameter of thewire being wound into coils.

In order to accomplish this desired result, the paper feeding means iscontrolled from the driving shaft i. e. the source that drives thereversing mechanism, and the screw shaft rather than controlling thepaper feeding means from the screw shaft after the reversing mechanismhas functioned, whereby the feeding of the paper is not a function ofthe reversing mechanism, following its action, but is independentthereof.

In machines of the type described, the

reversing mechanism is under control of a cam disk which is constantlyurged to rotate by the driving shaft of the machine, but is only allowedto rotate intermittently through 180. In accordance with this inventionI attach to this cam a second cam which controls the insertion of theinsulating material in such a manner that the feeding of the paper takesplace immediately upon movement of this cam and is not delayed untilafter later movement of the reversing mechanism.

Other objects and advantages will be apparent from the followingdescription of an embodiment of the invention and the novel featureswill be particularly pointed out hereinafter in claims.

In the accom anying drawings:

Fig. 1 is a p an view of a machine constructed in accordance with thisinvention;

Fig. 2 is a section on line 2-2 of Fig. 1;

Fig. 3 is a section on line 3-3 of Fig. 1;

Fig. 4 is an enlarged plan view of the paper controlling mechanism, and

Fig. 5 is a detail in elevation of the controlling cam.

The type of winding machine illustrated in the drawing and to which thedevice of this invention may be conveniently applied, is of theautomatic type having" a spindle shaft 1 rotatably supported between ahead stock 2 and a tail stock 3 carried by a main frame 4. A pulley 5 isattached to the spindle shaft which is driven by a belt 6 from anysuitable source of power (not shown). A worm 7 on shaft 1 meshes withand drives a worm wheel 8 carried by a shaft 9, and shaft 9 carries abevel gear 10 30 which meshes with and drives a pair of oppositelydisposed bevel gears 11 and 12 formmg part of a reverse clutch mechanismthat is operated by a clutch lever 13.

The clutch lever 13 is pivoted at 14 intermediate of its ends, and has aresilient connection to a link 15 connected to a lever 16 and having acam pin 17 running in a cam groove Figure 2 formed in a cam plate 18.The cam plate is mounted on and frlctionally driven by the shaft 9. Thecam groove of the plate 18 is adapted to reci rocate the link 15 in onedirection during ha f the revolution of the cam late, and in theopposite direction during tlie other half. The cam plate is providedwith peripherally disposed escapement teeth 19 which cooperate with anescapement pawl 20 carried by a slidable shaft 21. The shaft 21 whenmoved endwise will move the pawl '20 out of the path of one of theescapement teeth 19 and into the path of the other since the teeth19 aredisposed substantially diametrically of the plate 18, and the cam plate18 will hereleased for approximately half a revolution for each endwisemovement of the pawl 20 with the shaft 21. The shaft 21 is provided withrack teeth 22 which mesh with a small pinion 23 connected to and rotatinabell crank nected to a rod 25 which extends along the machine toapproximately the opposite end where it is connected by a pivot 26 to alate 27 slidable upon the frame .4 of the mac ine. The plate 27 is.mounted upon the frame 4 fora limited endwise movement thereon.

arm 24. The arm 24 is pivotally con- Therefore, ateach endwise movementofthe plate 27, the direction of rotation of the shaft 30 to whichbevelgears 11 and 12 may be alternately clutched by an operation of thelever 13, will be reversed. The shaft 30 is connected through a coupling31 to a threaded or screw shaft 32 upon which a follower 33 is mountedby a screw-threaded connection so that the follower will move in onedirection or the other along the shaft 32 depending upon the directionof rotation of the shaft.

A lever 34 is slidable in a sleeve 35 which is pivotally mounted at 36upon the frame of the-machine. One end of the lever 34 is connected by apivot 37 to the follower 33, so that as the follower moves along theshaft 32, the lever 34 will be rocked about the pivot 36.",

A traverse bar 38 is mounted for sliding reciprocatory movement inbearings 39 on the frame and is disposed parallelwith and in closeproximity to the winding spindle 1. This traverse bar 38 carriessuitable wire guides 40 for directing the wires to a winding. formmounted on and driven from the winding spindle 1. When the traverse rodmoves endwise in its bearings, the guiding devices 40 will move endwisealong the winding form and cause the wire to be guided thereto to belaid upon the form in helical layers. A sleeve 42 is pivoted at 43 toone end-of the traverse bar 38 and the lever 34 passes through thesleeve 42 so that when the lever 34 is rocked it will cause areciprocation of the traverse bar.

A threaded shaft 44, one end being lefthand threads, and the other halfat the other end being right-hand threads, is rotatably mountedin theplate 27 and carries thereon a pair of spaced nuts 45 and 46 disposedone upon each portion of the shaft 44 and adapted to be engaged by thepivot pin 37 connecting the lever 34 to the follower 33 and whichdepends between the nuts 45 and 46 with the result that as the follower33 moves along the shaft 32, the pin 37 will approach and then engageone of the nuts 45 or 46 and through it shift the plate 27 endwise andeffect a reversal of rotation of the shaft length of the layers of wireto be wound.

upon the windin form.

Sheets of insul ating material are su )ported by the usual s indlesnotherein 5 own, but shown and d scribed in detail in the earlierpatents referred to. The insulating ,32 by the operation of the link 15and its control of the reverse'lever 13. The rever;

1,eea,114

mechanisms are all shown and described in ally mounted at 57 at thelower end of arm 56 upon a suitable bearing bracket 58 carried by frame4. A roller 59 is fixed to the other end of the small shaft 54 forrotation I therewith, and is adapted to be carried into frictionaldriving engagement with an annular groove 60 cut into the periphery ofthe driving pulley 5 when the lever 56 is rotated in one direction, thatis, forwardly upon'its pivot 57.

To the outer extremit of the other horizontal arm 56 then is ad ustablyattached the bifurcated member 61 which carries a cam' roller 62rotatably mounted between its bifurcated ends. Cam roller 62 engages .a"cam disc 63 integral with or attached to cam plate 18. 0am disc 63 hastwo substantially diametrically opposite cut-away portions 64 bounded byan inclined portion 65 upon one end and b the-abrupt shoulder 66 formedby the end 0 a wear plate 67 adjustably secured to the inner wall of thecut-away portion at the other end thereof. A spring 68 normally urgesthe lever 56 in its forward position.

It follows therefore that when the traverse bar reaches the end of itsstroke pawl 20 will be moved out of the path of one of the escapementteeth 19 and thus allow cam plate 18 to revolve 180 or half revolutionto shift the reversing mechanism to reverse the direction of rotation ofshaft 32 to cause the traverse bar to change its direction of motion andlay a new layer of wire.

At the instant cam plate 18 starts to rotate or as soon thereafter as'may be desired cam roller 62, which is normally up upon the wear plate67 secured to the cam disc 63, will drOp to the inner wall of thecut-away portion 64 and allow lever 56 to swing upon its pivot 57 andpermit roller 59'to engage in groove 60 of the pulley 5. Roller59,through shaftv54 and connection 53 will rotate feed acceleratingrolls 50 and shoot a sheet of insulating material into the bight of therotating coil and wire. As cam disc 63 continues in its rotation camroller 62 will follow up the inclined end 65 and around to the wearplate diametrically opposite the previous one where the cam plate andcam disk will come to a rest due to engagement of the pawl 20 and. thealternate escapement tooth 19;

It can readily be seen that by the described mechanism the acceleratingroller 50 will be rotated for a short period for every half revolutionof the cam plate 18 and cam disc 63 and that the rotation will takeplace immediately upon the completion of a stroke of the traverse barwithoutthe necessity of waiting for complete action of the reversingmechanism. The exact timing of the feeding of the paper may beaccurately regulated by adjustment of either or both of the twoadjustable end members upon the two arms 56 and 56 of lever 56 and alsoby adjustment of the wear pieces 67 secured to'the cam disc. o 1

Various changes may be made in the details of construction withoutdeparting from the spirit and scope of the invention as defined in theappended claims.

Claims:

1. In a winding machine, a winding spindle, a traverse member forguiding a wire to said spindle, a shaft for reciprocating said traversemember to cause it to lay successive layers of wire on said spindle,rollers adjacent said spindle for feeding a sheet of insulatmg materialto said spindle, a driving shaft for rotating said first mentioned shaftI 2. In a winding machine, a winding spindle, a traverse member forguiding a wire to said spindle, a shaft for reciprocating said traversemember to cause it to lay successive layers of wire upon said spindle,rollers adjacent said spindle for feeding a sheet of insulating materialto said spindle, a driving shaft for rotating said first mentionedshaft, a cam on said driving shaft and means operated by said cam forintermittently rotating said feed rolls.

3. In a winding machine, a frame, a winding spindle mounted for rotationtherein, a traverse member for guiding a wire to said spindle, a shaftfor reciprocating'said memher to cause it to lay successive layers ofwire on said spindle, a driving shaft for rotating said first mentionedshaft, reversing mechanism interposed between said driving shaft andsaid other shaft, rollers adjacent said spindle for feeding a sheet ofmaterial to said spindle, and means connected to said said feedingrollers.-

4. In awinding machine, a frame, a wind- 7 ing spindle mounted forrotation therein, a

traverse member for guiding a wire to said spindle, a shaft forreciprocating said member to cause it to lay successive layers of wireon said spindle, a driving shaft for ro tating said first mentionedshaft, reversing mechanism interposed between said driving shaft andsaid other shaft, rollers adjacent said spindle for feeding a sheet ofmaterial to said spindle, and means on said driving shaft for actuatingsaid reversing mechanism and for intermittently operating said feedingrollers.

5. In a winding machine, a frame, a winding spindle mounted for rotationtherein, a

traverse member for guiding a wire to said spindle, a shaft forreciprocating said member to cause it to lay successive layers of wireupon said spindle, a driving shaft for rotating said first mentionedshaft, reversing mechanism interposed between said driving shaft andsaid other shaft, rollers adjacent said spindle for feeding a sheet ofmaterial to said spindle, a bracket pivoted to said frame, means fordriving said rollers carried by mid bracket, and means on said driving6'. In ,a winding machine, a frame, a winding spindle mounted forrotation therein, a

traverse member for guiding a wire to said spindle, a shaft forreciprocating said member to cause it to lay successive layers of wireupon said spindle, a driving shaft for rotating said first mentionedshaft, reversing mechanism interposed between said driving shaft andsaid other shaft, rollers adjacent said spindle for feeding a sheet ofmaterial to said spindle, a bracket pivoted to said frame, means fordriving said rollers carried b said bracket, and means on said driving saft including a cam attached thereto and associated mechanism foroperating the reversing mechanism and a second cam attached to saidfirst mentioned cam for engaging said bracket to intermittently operatesaid feeding rollers.

In witness whereof, I hereunto subscribe my signature.

EDWARD J. HENNELLY.

